IP Library Granted Patent US 10,711,136
Granted Patent B2
US 10,711,136 · App. 16/299,734 · Granted Jul 14, 2020

Engineered skin equivalent, method of manufacture thereof and products derived therefrom

Inventors: Ingvar Helgason (South San Francisco, CA); Dusko Ilic (London, GB)
Assignees: VITROLABS INC; KINGS COLLEGE LONDON
C08L89/06C12N5/0625C12N5/0629C12N5/0698C14C3/02C14C13/00C12N2501/155C12N2501/385C12N2502/091C12N2502/094C12N2502/13C12N2506/45C12N2533/30C12N2533/54
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Quick Facts
Patent No.
US 10,711,136
App. No.
16/299,734
Granted
Jul 14, 2020
Kind
B2
Abstract

Disclosed herein are synthetic leathers, artificial epidermal layers, artificial dermal layers, layered structures, products produced therefrom and methods of producing the same.

Claims (29)

1. A method comprising: tanning at least a portion of an artificial dermal layer comprising a hair follicle cell, wherein said tanning comprises a vegetable tanning, a chrome tanning, an aldehyde tanning, syntan, or a bacterial dyeing, and wherein said artificial dermal layer comprises a fibroblast differentiated from a stem cell.

2. The method of claim 1 , wherein said stem cell is an induced pluripotent stem cell.

3. The method of claim 1 , wherein said stem cell is an embryonic stem cell.

4. The method of claim 1 , wherein said stem cell is a totipotent stem cell.

5. The method of claim 1 , wherein said artificial dermal layer further comprises a pigment.

6. The method of claim 1 , wherein said fibroblast expresses CD10, CD73, CD44, CD90, type I collagen, type III collagen, prolyl-4-hydroxylase beta, or a combination thereof.

7. The method of claim 1 , wherein said artificial dermal layer comprises collagen.

8. The method of claim 7 , wherein said artificial dermal layer is subjected to a process selected from a group consisting of preserving, soaking, bating, pickling, depickling, thinning, retanning, lubricating, crusting, wetting, sammying, shaving, rechroming, neutralizing, dyeing, fatliquoring, filling, stripping, stuffing, whitening, fixating, setting, drying, conditioning, milling, staking, buffing, finishing, oiling, brushing, padding, impregnating, spraying, roller coating, curtain coating, polishing, plating, embossing, ironing, glazing, tumbling and any combination thereof.

9. The method of claim 7 , wherein said collagen is produced at least in part by a collagen producing cell, is separately added, or any combination thereof.

10. The method of claim 9 , wherein said collagen producing cell comprises an epithelial cell, a fibroblast, a comeocyte, a Langerhans cell, a basal cell, or a combination thereof.

11. The method of claim 10 , wherein said collagen producing cell comprises said epithelial cell wherein said epithelial cell comprises a squamous cell, a cuboidal cell, a columnar cell, a basal cell, or a combination thereof.

12. The method of claim 1 , wherein said artificial dermal layer further comprises one or more of keratin, elastin, gelatin, proteoglycan, dermatan sulfate proteoglycan, glycosoaminoglycan, fibronectin, laminin, dermatopontin, lipid, fatty acid, carbohydrate, or a combination thereof.

13. The method of claim 1 , wherein a thickness of said artificial dermal layer ranges from about 0.02 mm to about 5 mm.

14. The method of claim 1 , wherein said artificial dermal layer further comprises a hair follicle.

15. The method of claim 14 , wherein said artificial dermal layer further comprises fur.

16. The method of claim 1 , wherein said artificial dermal layer is cultured using a scaffold prior to said tanning.

17. The method of claim 16 , wherein said scaffold comprises silk.

18. The method of claim 16 , wherein said scaffold comprises polyester.

19. An artificial dermal layer that comprises a hair follicle cell, wherein said artificial dermal layer comprises a fibroblast differentiated from a stem cell.

20. The artificial dermal layer of claim 19 , wherein said artificial dermal layer further comprises a hair follicle.

21. The artificial dermal layer of claim 19 , wherein said artificial dermal layer further comprises fur.

22. The artificial dermal layer of claim 19 , wherein said artificial dermal layer further comprises an odorant or a preservative.

23. The artificial dermal layer of claim 19 , wherein said artificial dermal layer further comprises collagen.

24. The artificial dermal layer of claim 19 , wherein said artificial dermal layer further comprises a pattern designed to mimic a skin pattern of an animal.

25. The artificial dermal layer of claim 19 , wherein said artificial dermal layer is tanned.

26. The artificial dermal layer of claim 19 , wherein said artificial dermal layer is subjected to a process selected from a group consisting of preserving, soaking, bating, pickling, depickling, thinning, retanning, lubricating, crusting, wetting, sammying, shaving, rechroming, neutralizing, dyeing, fatliquoring, filling, stripping, stuffing, whitening, fixating, setting, drying, conditioning, milling, staking, buffing, finishing, oiling, brushing, padding, impregnating, spraying, roller coating, curtain coating, polishing, plating, embossing, ironing, glazing, tumbling and any combination thereof.

27. The method of claim 1 , wherein an artificial epidermal layer is atop said artificial dermal layer.

28. The method of claim 16 , wherein said scaffold comprises collagen, cellulose, cotton, acetate, acrylic, latex, linen, nylon, rayon, velvet, modacrylic, saran, vinyon, wool, jute, hemp, bamboo, flax, alginate, fibronectin, poly-p-phenyleneterephthalamide, polyethylene, polypropylene, carrageenan, agarose, fibrin, glass, silica, aramid, carbon, poly(tetrafluoroethylene), polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyacrylonitrile, chitosan, polyurethane, poly(urethane-urea), polyethylene phthalate, chitin, elastin, keratin, polyhydroxyalkanoate, dextran, pullane, polyhyaluronic acid, poly(3-hydroxyalkanoate), poly(3-hydroxyoctanoate), poly(3-hydroxyfatty acid), poly(caprolactone), poly(para-dioxanone), laminin, zein, casein, gelatin, gluten, albumen, poly L-lactic acid (PLA), polyglycolic acid (PGA), or any combination thereof.

29. The method of claim 1 , wherein said artificial dermal layer further comprises a keratinocyte, an endothelial cell, or an adipocyte.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2025
From: VITROLABS INC
To: FAIRCRAFT
Reel/Frame 071535/0661 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2019
From: HELGASON, INGVAR
To: VITROLABS INC
Reel/Frame 048582/0551 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2019
From: ILIC, DUSKO
To: KINGS COLLEGE LONDON
Reel/Frame 048582/0586 →
Continuity (3)
Continuation 15493083 · Apr 20, 2017
Provisional Application 62325819 · Apr 21, 2016
Related Publication 20190367732A1 · Dec 5, 2019
Cited By (1)
US 12,410,317